Rx Introduction; Ftm Setup For Rx Troubleshooting - Nokia 1265 Description And Troubleshooting

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Rx Introduction

The QSC6010 IC (Figure 9) provides the Zero-IF receiver signal path for
Cellular-CDMA reception. For this chipset, Cellular-CDMA refers to band classes
0 and 3 as defined by the cdma2000 standard, with mobile station receivers
operating between 869 and 894 MHz. The Rx signal path includes the LNA,
quadrature downconversion, and baseband functions.
The Cellular-CDMA receive signal is routed from the antenna to the QSC6010 IC
via the duplexer. The analog baseband outputs interface with one of Qualcomm's
Mobile Station QSC6010 devices that also provide status and control signaling.
Integrated Rx LO circuits, ideally supplemented by the QSC6010 transmitter IC,
provide frequency plan flexibility and further reduce PCB parts count.

FTM Setup for Rx Troubleshooting

Put PWB on the module jig. Use the following steps to configure FTM for RF
troubleshooting.
1. Connect RF test connector to a spectrum.
2. Set to "FTM mode" in Module Jig.
3. Connect the mobile terminal to a PC via the Module Jig, and connect a
power supply.
4. Open CCS Service Software and run RF Tools function.
5. The FTM dialog box appears.
6. "Select COM port" to appropriate one.
7. Set "Connect Phone".
8. Set "Set FTM ".
9. Set "RF Mode" to "CDMA800".
10. Set "Set Channel "to Channel "384".
11. Set "Set LNA Range" to whatever needed.
Issue 1 04/2007
Figure 10: FTM dialog box
© 2007 Nokia Corporation
RF Description and Troubleshooting
Company Confidential
1265 (RH-104)
Page 13